[%c_arrow e3f5;keyPressed;none;from;e3;opacity;0.8;to;f5;persistent;false] Good maneuvering from both sides. The knight can go to f5 now, trying to create threats around the black king.
19... d6a3  20. b2a3  20... e7a3  21. e5g4  21... f6e4 